Konica Minolta SPAD-502plus Chlorophyll Meter is a compact,lightweight meter which can be used to determine the amount of chlorophyll present in plant leaves.
The amount of chlorophyll present in plant leaves can serve as an indicator of the overall condition of the plant itself.In general,healthier plants will contain more chlorophyll than less healthy ones.
The SPAD value determined by the SPAD-502Plus provides an indication of the relative amount of chlorophyll present in plant leaves.This SPAD value can be used to determine if and when supplementary fertilizer is necessary.Through proper use of measured SPAD values,it is possible to produce healthier plants,resulting in a larger and higher-quality crop yield.
Konica Minolta SPAD-502plus Chlorophyll Meter Parameter
|Type||Handhold meter for measuring chlorophyll|
|Measurement sample||Plant leaves|
|Measurement principle||Optical density difference at two wavelengths|
|Maximum sample thickness||1.2mm|
|Insertion depth||12mm maximum;depth stop adjustable to depths between 0 and 6mm|
|Light source||2LEDs(light-emitting diodes)|
|Display||LCD panel showing 4-digit measurement value (-9.9 to 199.9) and 2-digit data number|
|Data memory||Space for 30 data|
|Power switch:Switches power on and off|
|AVERAGE Key:Calculates the average of all data in memory|
|ALL DATA CLEAR Key:Deletes all data in memory|
|DATA RECALL Key:Recalls data graphically for previous data number|
|1 DATA DELETE Key:Deletes displayed data
Measurements automatically taken when measuring head is closed.
|Power source||2 AA-size 1.5V alkaline-manganese|
|Battery life||More than 20000 measurements per set of 2 alkaline-manganese batteries|
|Minimum interval between measurements||Less than 2 seconds|
|Accuracy||Within±1 SPAD unit(at room temperature,SPAD value between 0 and 50.0);SPAD values of greater than 50.0 may be less accurate and will cause “*” to appear.|
|Repeatability||Within±0.3 SPAD units（SPAD value between 0 and 50.0）|
|Reproducibility||Within±0.5 SPAD units（SPAD value between 0 and 50.0）|
|Temperature drift||Less than ±0.04SPAD units/℃|
|Operation Condition||0 to 50℃(32~122°F) relative humidity less than 85% at 35℃ with no condensation|
|Storage Condition||-20 to 55℃(-4~131°F) relative humidity less than 85% at 35℃ with no condensation|
|Other||Buzzer(single beep for measurement complete,series of beeps for error);function for inputting compensation value|